Miniature, high-amplitude Series 3991/3501 shock accelerometers are capable of measuring long-duration transient motion and respond to and survive extremely fast rise times typical of high-g events. Available in both packaged and OEM versions, device uses an air-damped sensing element micromachined from silicon. Sensor incorporates a seismic mass, protective over-range stops, and dull-active Wheatstone bridge into a form factor measuring only 2.5 x 1.7 x 0.9 mm. Slight air damping reduces resonant amplification, increasing measurement accuracy. Company offers a 50% trade-up discount applicable to competitive devices, or 25% for select models of the company’s own offerings.